Ground State Static Properties of Nucleus

Ground state static properties ot Nycleus 4. X Rest Mass 1919 Aston discovered mass spectroscopic. Units -kg - Atomic mass unit (amu) or - Mev/c2 ulunified Atomic mass unit) Relation b/w various units Atomic mass unit (amu) Prior to 1961 (amu) I amy = 1/6 time mass of one O atom After 1961 (called unified amy u) 1 u : / amu = 1.0003172:1 1u or I amy = 1/2 / times the mass of one 12 Carbon 12 atom. 1. Mole of C 12 has Mass = 12 gm 1 Mole of C12 has atoms = 6.022x1023 Avagadro no. 23 6.022 atoms has = 12 gm. 1 atom of c12 has = 12 6.022 x1023

I amu = 12 Ix Mass of one c12 Atom = 12.gm x 103 gm Kg 1 lamu = 1.66*10-27 kg In Energy units Energy = massxc2 mle 1 amuxc2 = 1.66 X 10 -27 kg x (3x108)2 Joule / Joule = I ev lev= 1.6X 10 19 1.6x10-19 I MeV = 1.6x10-13 I amuxc2 = 1.66x1027x(3x108)2 Mev. 1.6X10-13 amuxc2 = 931.5 Mev